All I know is that Cauley did not completely dominate his league full of MIAA and rec players.
He's been very good last offseason and so far this offseason at camps and traveling team tournaments. Sometimes 16 year olds struggle with consistency against inferior competition. Ellis has gotten better with this.
As far as differences between Cauley & JO. I didnt see JO in high school but it appears to me that Cauley seems more comfortable with his back to the basket & accepting contact from defenders. Obviously with their body type there is going to be some duplicity with look & skills, but there are some differences in their game. That being said I have no idea what role Cauley would fill with what we think the roster will look like in 12-13.